Lr400000Au400No400Cu400Sn400Hf400H40000O1000Ne40000 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Lr₄₀₀₀₀₀Au₄₀₀No₄₀₀Cu₄₀₀Sn₄₀₀Hf₄₀₀H₄₀₀₀₀O₁₀₀₀Ne₄₀₀₀₀ is 106034082.4396 g/mol

Convert between Lr₄₀₀₀₀₀Au₄₀₀No₄₀₀Cu₄₀₀Sn₄₀₀Hf₄₀₀H₄₀₀₀₀O₁₀₀₀Ne₄₀₀₀₀ weight and moles

Compound	Moles		Weight, g
Lr₄₀₀₀₀₀Au₄₀₀No₄₀₀Cu₄₀₀Sn₄₀₀Hf₄₀₀H₄₀₀₀₀O₁₀₀₀Ne₄₀₀₀₀

Elemental composition of Lr₄₀₀₀₀₀Au₄₀₀No₄₀₀Cu₄₀₀Sn₄₀₀Hf₄₀₀H₄₀₀₀₀O₁₀₀₀Ne₄₀₀₀₀

Element	Symbol	Atomic weight	Atoms	Mass percent
Lawrencium	Lr	262.1096	400000	98.8775
Gold	Au	196.966569	400	0.0743
Nobelium	No	259.1010	400	0.0977
Copper	Cu	63.546	400	0.0240
Tin	Sn	118.710	400	0.0448
Hafnium	Hf	178.49	400	0.0673
Hydrogen	H	1.00794	40000	0.0380
Oxygen	O	15.9994	1000	0.0151
Neon	Ne	20.1797	40000	0.7613

Computing molar mass step by step
First, compute the number of each atom in Lr₄₀₀₀₀₀Au₄₀₀No₄₀₀Cu₄₀₀Sn₄₀₀Hf₄₀₀H₄₀₀₀₀O₁₀₀₀Ne₄₀₀₀₀: Lr: 400000, Au: 400, No: 400, Cu: 400, Sn: 400, Hf: 400, H: 40000, O: 1000, Ne: 40000 Then, lookup atomic weights for each element in periodic table: Lr: 262.10963, Au: 196.966569, No: 259.10103, Cu: 63.546, Sn: 118.71, Hf: 178.49, H: 1.00794, O: 15.9994, Ne: 20.1797 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Lr₄₀₀₀₀₀Au₄₀₀No₄₀₀Cu₄₀₀Sn₄₀₀Hf₄₀₀H₄₀₀₀₀O₁₀₀₀Ne₄₀₀₀₀) = ∑ Count_i * Weight_i = Count(Lr) * Weight(Lr) + Count(Au) * Weight(Au) + Count(No) * Weight(No) + Count(Cu) * Weight(Cu) + Count(Sn) * Weight(Sn) + Count(Hf) * Weight(Hf) + Count(H) * Weight(H) + Count(O) * Weight(O) + Count(Ne) * Weight(Ne) = 400000 * 262.10963 + 400 * 196.966569 + 400 * 259.10103 + 400 * 63.546 + 400 * 118.71 + 400 * 178.49 + 40000 * 1.00794 + 1000 * 15.9994 + 40000 * 20.1797 = 106034082.4396 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Au₄₀₀Cu₄₀₀H₄₀₀₀₀Hf₄₀₀Lr₄₀₀₀₀₀Ne₄₀₀₀₀No₄₀₀O₁₀₀₀Sn₄₀₀

Computing molar mass (molar weight)

To calculate molar mass of a chemical compound enter its formula and click 'Compute'. In chemical formula you may use:

Any chemical element. Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al.
Functional groups: D, T, Ph, Me, Et, Bu, AcAc, For, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg
parenthesis () or brackets [].
Common compound names.

Examples of molar mass computations: NaCl, Ca(OH)2, K4[Fe(CN)6], CuSO4*5H2O, nitric acid, potassium permanganate, ethanol, fructose, caffeine, water.

Molar mass calculator also displays common compound name, Hill formula, elemental composition, mass percent composition, atomic percent compositions and allows to convert from weight to number of moles and vice versa.

Computing molecular weight (molecular mass)

To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets.
Examples of molecular weight computations: C[14]O[16]2, S[34]O[16]2.

Definitions

Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10²³ particles (Avogadro's number)

Steps to calculate molar mass

Identify the compound: write down the chemical formula of the compound. For example, water is H₂O, meaning it contains two hydrogen atoms and one oxygen atom.
Find atomic masses: look up the atomic masses of each element present in the compound. The atomic mass is usually found on the periodic table and is given in atomic mass units (amu).
Calculate molar mass of each element: multiply the atomic mass of each element by the number of atoms of that element in the compound.
Add them together: add the results from step 3 to get the total molar mass of the compound.

Example: calculating molar mass

Let's calculate the molar mass of carbon dioxide (CO₂):

Carbon (C) has an atomic mass of about 12.01 amu.
Oxygen (O) has an atomic mass of about 16.00 amu.
CO₂ has one carbon atom and two oxygen atoms.
The molar mass of carbon dioxide is 12.01 + (2 × 16.00) = 44.01 g/mol.

Lesson on computing molar mass

Weights of atoms and isotopes are from NIST article.

molecular weights calculated today

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